nativeUI | 基于原生js的UI组件库 - ###1 | Build Tool library

I am trying to make a "name place animal thing" game in Spark AR, but i want to use Native UI picker, to provide the game in 2 languages. I used two planes on a face tracker. The first (Main), is the "intro screen", and the second (Letters), is the one with the animated letter sequence which stops to a random number after x seconds. The idea is, if possible, when the user is using the picker, to switch the Materials in the planes, from the English ones to the ones in the second language.

Here is a screenshot of my Spark AR project: https://snipboard.io/FtOS9W.jpg

And my script so far is:

I'm creating a stand-alone vehicle extras menu. The problem I'm having is if I spawn car A and it has 4 extra options, they work fine. But if I spawn car B and it has 8, the menu will still only show 4 from the previous car A. This is true regardless if I leave car A or delete it. Any ideas how to reset that so it reads the correct vehicle?